Xylem CG 853 User Manual

Page 23

Operation

4.2

Measuring

Preparatory

activities

Perform the following activities when you want to measure:

Caution
When connecting an earthed PC/printer, measurements
cannot be performed in earthed media as incorrect values
would result.
The RS232 interface is not galvanically isolated.

Temperature probe

Measurements can be performed with and without a temper-
ature probe. A connected temperature probe is indicated by
TP on the display.
If you want to use a SCHOTT conductivity measuring cell
without a temperature probe, you have to connect it with an
adapter (available at SCHOTT).

Note
The conductivity meter automatically recognizes the type of
the temperature probe used. As a result, you can connect
electrodes with the NTC30 or Pt1000.

The temperature measurement is absolutely essential for a
reproducible conductivity measurement. If the measure-
ment is made without a temperature probe, proceed as fol-
lows:

1 Connect the measuring cell to the instrument.

2 Adjust the temperature of the test solutions or mea-

sure the current temperature if the measurement is
made without a temperature probe.

3 Calibrate the instrument with the measuring cell or

check the cell constant set up.

4 Select the measuring mode by pressing <

1 Determine the current temperature using a thermom-

eter.

2 Set up the temperature by pressing <

▲

> <

▼